Chaoshan or Teoswa is a cultural-linguistic region in the east of Guangdong, China. It is the origin of the Min Nan Chaoshan dialect (潮汕话). The region, also known as Chiushan in Cantonese, consists of the cities Chaozhou, Jieyang and Shantou. It differs linguistically from the rest of Guangdong province, which was historically dominated by Yue speakers, Hakka, and Leizhou Min speakers. However, Mandarin has recently become the dominant language in the region. It is historically important as the ancestral homeland of many citizens of other countries of Chinese descent, including Viets, Thais, Cambodians, Singaporeans, Malaysians, and Indonesians.

Chaozhou, alternatively Chiuchow, Chaochow or Teochew, is a city in the eastern Guangdong province of China. It borders Shantou to the south, Jieyang to the southwest, Meizhou to the northwest, the province of Fujian to the east, and the South China Sea to the southeast. It is administered as a prefecture-level city with a jurisdiction area of 3,110 km2 (1,200 sq mi) and a total population of 2,568,387. Its built-up area encompassing most of Shantou and Jieyang cities was home to 12,543,024 inhabitants on 13 local administrative areas. Along with Shantou and Jieyang, Chaozhou is a cultural center of the Chaoshan region.